diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorServer.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorServer.java
index f5102cbe53..d547a73879 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorServer.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/authlibinjector/AuthlibInjectorServer.java
@@ -60,6 +60,7 @@ public static AuthlibInjectorServer locateServer(String url) throws IOException
         try {
             url = addHttpsIfMissing(url);
             HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
+            conn.setRequestProperty("Accept-Language", Locale.getDefault().toLanguageTag());
 
             String ali = conn.getHeaderField("x-authlib-injector-api-location");
             if (ali != null) {
@@ -68,6 +69,7 @@ public static AuthlibInjectorServer locateServer(String url) throws IOException
                     conn.disconnect();
                     url = absoluteAli.toString();
                     conn = (HttpURLConnection) absoluteAli.openConnection();
+                    conn.setRequestProperty("Accept-Language", Locale.getDefault().toLanguageTag());
                 }
             }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/io/NetworkUtils.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/io/NetworkUtils.java
index afd352dbe4..706dde7734 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/io/NetworkUtils.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/io/NetworkUtils.java
@@ -90,7 +90,7 @@ public static URLConnection createConnection(URL url) throws IOException {
         connection.setUseCaches(false);
         connection.setConnectTimeout(TIME_OUT);
         connection.setReadTimeout(TIME_OUT);
-        connection.setRequestProperty("Accept-Language", Locale.getDefault().toString());
+        connection.setRequestProperty("Accept-Language", Locale.getDefault().toLanguageTag());
         return connection;
     }